JC
John Clarke — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this John Clarke across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Clarke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Liquor Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1912 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| James Clarke | Head | — | 56 | ~1884 |
| Lottie Clarke | Spouse | — | 54 | ~1886 |
| John Clarke | Son | — | 28 | ~1912 |
| Carl Clarke | Son | — | 24 | ~1916 |
Census Appearances
1920
Worcester, Massachusetts
Son, age 8
Worcester, Massachusetts · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Sweden |
| Industry | none |
| Mother Tongue | Swedish |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Son, age 18
Worcester, Massachusetts · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Son, age 28
Worcester-County, Massachusetts · implied b. ~1912 — 4 household members
| Surname | Clarke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Occupation | Clerk |
| Industry | Retail Liquor Store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Clarke across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Clarke (~0.92 confidence) and father James Clarke (~0.92 confidence) and father James Clarke (~0.92 confidence) and mother Retta Clarke (~0.92 confidence) and mother Lottie Clarke (~0.92 confidence) and mother Matice Clarke (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Clarke
b. ~1884
Source father
● Household
· direct · ~0.92
Father
James Clarke
b. ~1884
Source father
● Household
· direct · ~0.92
Father
James Clarke
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Retta Clarke
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Lottie Clarke
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Matice Clarke
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Clarke
Son · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Sibling
Carl Clarke
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01714-00046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Westaver | 10 | Daughter | — | Massachusetts |
| 2 | Joan Westaver | 7 | Daughter | — | Massachusetts |
| 3 | Ruth Westaver | 4 | Daughter | — | Massachusetts |
| 4 | Harold Leary | 42 | Head | Shipper | Massachusetts |
| 5 | Grace Leary | 39 | Wife | — | Massachusetts |
| 6 | Rosann Leary | 23 | Daughter | — | Massachusetts |
| 7 | Harold R. Leary | 15 | Son | — | Massachusetts |
| 8 | Regina Leary | 5 | Daughter | — | Massachusetts |
| 9 | Maurice Murphy | 45 | Head | Stationary Fireman | Ireland |
| 10 | Mary Murphy | 32 | Wife | — | Ireland |
| 11 | James Murphy | 11 | Son | — | Massachusetts |
| 12 | Donald Murphy | 10 | Son | — | Massachusetts |
| 13 | Mary Murphy | 9 | Daughter | — | Massachusetts |
| 14 | Ann Murphy | 3 | Daughter | — | Massachusetts |
| 15 | Joseph Kimball | 32 | Head | Dresser | Texas |
| 16 | Inez Kimball | 35 | Wife | — | New Hampshire |
| 17 | Robert Kimball | 14 | Son | — | New Hampshire |
| 18 | Francis Kimball | 12 | Son | — | New Hampshire |
| 19 | Dorothy Kimball | 14 | Niece | — | New Hampshire |
| 20 | Thomas Hennessy | 71 | Head | — | Eire |
| 21 | Margaret Hennessy | 62 | Wife | Housework | Eire |
| 22 | James E. Clarke | 56 | Head | Postal Clerk | Massachusetts |
| 23 | Lottie Clarke | 54 | Wife | — | Sweden |
| 24 | John Clarke THIS PERSON | 28 | Son | Clerk | Massachusetts |
| 25 | Carl Clarke | 24 | Son | Clerk | Massachusetts |
| 26 | Elwin Dubois | 30 | Head | Paint Sprayer | Massachusetts |
| 27 | Mary Dubois | 31 | Wife | — | Vermont |
| 28 | Lester G. Dubois | 13 | Step Son | — | Massachusetts |
| 29 | John Barrett | 40 | Head | Bus Driver | Massachusetts |
| 30 | Doris Barrett | 40 | Wife | — | Massachusetts |
| 31 | David Barrett | 11 | Son | — | Massachusetts |
| 32 | Elizabeth Bergman | 60 | Head | — | Ireland |
| 33 | Helen Bergman | 35 | Daughter | Machine Operator | Massachusetts |
| 34 | Catherine Bergman | 35 | Daughter | Cashier | Massachusetts |
| 35 | Francis Bergman | 31 | Son | School Teacher | Massachusetts |
| 36 | Margaret Bergman | 27 | Daughter | Clerk | Massachusetts |
| 37 | Paul Bergman | 25 | Son | Salesman | Massachusetts |
| 38 | John J. Navin | 52 | Head | Finisher | Massachusetts |
| 39 | Ella M. Navin | 50 | Wife | Examiner | Massachusetts |
| 40 | Thomas Navin | 24 | Son | Laborer | Massachusetts |
Pedigree Summary
John + 1 sibling
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)